An hour a month + some docker shenanigans I don't understand? Your sales pitch started out so good and then - anxiety spiking for me. :-D

Depending on what you build and how you build it you're going to have a large range of experiences.

Do you need just disks in a raid? Look at it once a month to make sure nothing stupid has happened and go on with your life. Do you want to run a bunch of services (arr stack, home assistant, full on home lab type stuff) then yes it may require some more "work" depending on what your running and how deep down the rabbit hole you want to go.

I run TrueNAS Scale at home myself.

There’s no need to proactively check in on anything if you’ve set up email alerts. It’s pretty straightforward to give the NAS permission to send you emails in case a drive dies on you rather than failing silently.

Docker containers are just a nice bonus. You don’t need to use them if you don’t want to, but it is awfully convenient to run things like media encoders, torrent clients, download managers, etc. directly on your storage.